Fig. 3From: A long survivor with local relapse of hilar cholangiocarcinoma after R1 surgery treated with chemoradiotherapy: a case report and literature reviewPathological findings of hilar cholangiocarcinoma. a Extension of the hilar cholangiocarcinoma. Red line represents the existence of cancer cells evaluated with several paraffin blocks (open yellow rectangles). Paraffin block numbers are shown as orange-colored circled numbers. b Cholangiocarcinoma cells are seen in biliary epithelia at the surgical margin on hepatic side. c Cholangiocarcinoma cells are also seen in submucosal area. ×400 magnificationBack to article page